Why do some people keep trying to prove Bitcoin as a pump and dump scheme? Yes it has pumps and dumps, but if you zoom out, those pumps and dumps get smoothed out and you see a digital asset which keeps increasing in value because people see it as a hedge against USD and other currencies inflation. The increase in value is not infinite, and that can also be seen in the price increase curve (log). The price increase is slowing. Why is it difficult to come to the conclusion that initially Bitcoin price increase will be volatile and eventually it will come to parity, decreasing the volatility. From that point onwards, the price will be more closely related to actual inflation (world over).

(The above purposefully ignores the other debate about electricity, usage, etc. to keep the discussion simplified.)